| Lahas | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Lahas (Gers).svg |
| Arrondissement: | Auch |
| Canton: | Val de Save |
| Insee: | 32182 |
| Postal Code: | 32130 |
| Mayor: | Pierre Danos[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.5556°N 0.8925°W |
| Elevation M: | 276 |
| Elevation Min M: | 166 |
| Elevation Max M: | 281 |
| Area Km2: | 14.54 |
Lahas (in French pronounced as /la.as/; Occitan (post 1500);: Lahàs) is a commune in the Gers department in southwestern France.